Maß (pronounced [ˈmaːs]) or Mass (Swiss spelling, elsewhere used for dialectal [ˈmas]) is the German word describing the amount of beer in a regulation mug, in modern times exactly 1 liter (33.8 U.S. fl oz; 1.8 imp pt).
Its feminine version, "die Maß", is used in southern Germany and Austria to refer to a one-liter glass beer mug or its contents.
[4] In the more northerly parts of Germany, the Maß has mostly fallen out of use, except for Bavarian-themed events, since beer for immediate consumption there is usually sold in smaller amounts, from 0.2–0.5 liters (6.8–17 U.S. fl oz), Mugs are frequently decorated with a print of the logo of the brewery.
Some beer gardens and restaurants rent space out to patrons to store their mugs, which often have personalized engravings on their lids.
[citation needed] According to physicist Erich Schuller of the Institute for Forensic Medicine at the Ludwig Maximilian University of Munich, a Maßkrug is an "effective percussion tool" in which each strike is potentially life-threatening.